Metal skewers, or wooden ones soaked in water for at least 20 minutes4

Directions

Combine vinegar, oil, and pork in a large plastic resealable bag, shake to coat, and marinate in the refrigerator 30 minutes to overnight, turning at least once.

In a medium bowl, make sweet and sour sauce by whisking together ketchup, white vinegar, sugar, soy sauce, and salt. Set aside.

Prepare grill. Alternate threading pork, pineapple, and red onion on skewers. Grill 8 minutes on each side, or until pork is cooked through but still tender.

Drizzle kebabs with sweet and sour sauce and serve.

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